Display panel and manufacture method thereof

ABSTRACT

The present invention provides a display substrate and a manufacture method thereof. The display substrate locates the common electrode ( 10 ) above the pixel electrode ( 20 ) and overlapping with the pixel electrode ( 20 ) on the same substrate ( 100 ); the common electrode ( 10 ) comprises a first opening (OP 1 ), a second opening (OP 2 ), a third opening (OP 3 ) and a fourth opening (OP 4 ) which are symmetrically located to one another; the first opening (OP 1 ) comprises an eleventh extension part (OP 11 ) extending along a tilt direction, a twelfth extension part (OP 12 ) perpendicular with the eleventh extension part (OP 11 ) and a thirteenth extension part (OP 13 ) perpendicular with the eleventh extension part (OP 11 ), of which the liquid crystal molecules can be aligned along different directions to form multi-domains in a plurality of pixel areas, and thus, the color washout can be improved, and meanwhile, the brightness descend caused by the crystal textures formed at edges of respective domains can be diminished or prevented.

FIELD OF THE INVENTION

The present invention relates to a display technology field, and moreparticularly to a display panel and a manufacture method thereof.

BACKGROUND OF THE INVENTION

With the development of display technology, the flat panel device, suchas Liquid Crystal Display (LCD) possesses advantages of high imagequality, power saving, thin body and no irradiation. Thus, it has beenwidely applied in various consumer electrical products, such as mobilephone, television, personal digital assistant, digital camera, notebook,laptop, and becomes the major display device.

Most of the liquid crystal displays on the present market are back lighttype liquid crystal displays, which comprise a shell, a liquid crystaldisplay panel located in the shell and a backlight module located in theshell.

The traditional LCD panel comprises a Thin Film Transistor ArraySubstrate (TFT Array Substrate) and a Color Filter (CF). The pixelelectrode and the common electrode are respectively formed on the TFTsubstrate and the CF substrate, and Liquid Crystal is injected betweenthe TFT substrate and the CF substrate. The working principle is thatthe light of backlight module is refracted to generate images byapplying driving voltages between the pixel electrode and the commonelectrode for controlling the rotations of the liquid crystal moleculeswith the electrical field formed between the pixel electrode and thecommon electrode. The traditional liquid crystal display panel hasdefects of the narrow view angle, and the color washout phenomenon underwide view angle.

For expanding the view angle of the liquid crystal display panel, aPlane-to-Line Switching (PLS) liquid crystal display panel is proposed.The PLS liquid crystal display panel is to locate the pixel electrodeand the common electrode on the same substrate, and the verticalelectrical field formed between the pixel electrode and the commonelectrode is employed to drive the liquid crystal molecules to rotatealong the direction parallel with the substrate to expand the viewangle. However, in the PLS liquid crystal display panel, all the liquidcrystal molecules are aligned along the same direction, which can causethat the colors shown by the PLS liquid crystal display panel willchange from the different watch angles and create the color washoutphenomenon. Generally, the color washout is improved by utilizing themethod of forming multi-domains in single pixel unit. Nevertheless, asthe method is applied to the PLS liquid crystal display panel, thecrystal textures are formed at edges of respective domains. Accordingly,the brightness descends and the display effect is influenced.

SUMMARY OF THE INVENTION

An objective of the present invention is to provide a display substrate,of which the liquid crystal molecules can be aligned along differentdirections to form multi-domains in a plurality of pixel areas, andthus, the color washout can be improved, and meanwhile, the brightnessdescend caused by the crystal textures formed at edges of respectivedomains can be diminished or prevented.

Another objective of the present invention is to provide a manufacturemethod of a display substrate, and in the display substrate manufacturedby the method, the liquid crystal molecules can be aligned alongdifferent directions to form multi-domains in a plurality of pixelareas, and thus, the color washout can be improved, and meanwhile, thebrightness descend caused by the crystal textures formed at edges ofrespective domains can be diminished or prevented.

For realizing the aforesaid objective, the present invention provides adisplay substrate, comprising a substrate, a plurality of TFTs arrangedin array on the substrate, gate lines electrically coupled to the TFTsand arranged along a horizontal direction, data lines electricallycoupled to the TFTs and arranged along a vertical direction, pixelelectrodes electrically coupled to the TFTs and common electrodeslocated above the pixel electrodes and overlap with the pixelelectrodes;

the gate lines and the data lines crisscross to one another to define aplurality of pixel areas arranged in array, and each pixel areacomprises one pixel electrode, and each TFT correspondingly drives onepixel area;

the common electrode comprises a first opening, and a second openingsymmetrical to the first opening relative to the gate line; the firstopening overlaps with a first pixel area in the plurality of pixelareas, and the second opening overlaps with a second pixel area adjacentto the first pixel area in the vertical direction;

the first opening comprises an eleventh extension part extending along atilt direction, and a twelfth extension part extending from one end ofthe eleventh extension part and being perpendicular with the eleventhextension part, a thirteenth extension part extending from the other endof the eleventh extension part and being perpendicular with the eleventhextension part; and the extension directions of the twelfth extensionpart and the thirteenth extension part are opposite.

All the eleventh extension part, the twelfth extension part and thethirteenth extension part overlap with the pixel electrode.

The common electrode further comprises a third opening symmetrical tothe first opening relative to the data line, a fourth openingsymmetrical to the second opening relative to the data line; the thirdopening overlaps a third pixel area adjacent to the first pixel area inthe horizontal direction, and the fourth opening overlaps a fourth pixelarea adjacent to the third pixel area in the vertical direction andadjacent to the second pixel area in the horizontal direction.

The display substrate further comprises: a light shielding layer locatedon the substrate, a first insulative layer located on the lightshielding layer, a semiconductor layer located on the first insulativelayer, a second insulative layer located on the semiconductor layer, agate located on the second insulative layer, a third insulative layerlocated on the gate, a source and a drain respectively located at twosides of the gate and separated with the second insulative layer and thethird insulative layer;

both the source and the drain contact the semiconductor layer, and formelectrical connections to the semiconductor layer;

the gate lines and the gate are in the same layer; the data lines, thesource and the drain are in the same layer;

the semiconductor layer, the gate, the source and the drain form theTFTs.

The source and the drain respectively contact the semiconductor layervia a first via hole and a second via hole penetrating the secondinsulative layer and the third insulative layer.

The gate lines are electrically coupled to the gates of the TFTs, andthe data lines are electrically coupled to the sources of the TFTs.

The display substrate further comprises a fourth insulative layerlocated on the source, the drain, a fifth insulative layer locatedbetween the fourth insulative layer and the pixel electrode, a sixthinsulative layer located between the pixel electrode and the commonelectrode and a lower alignment layer located on the common electrode;

the pixel electrode contacts the drain to form electrical connection.

The pixel electrode contacts the drain via a third via hole penetratingthe fourth insulative layer and the fifth insulative layer.

The present invention further provides a manufacture method of a displaysubstrate, comprising steps of:

step 1, providing a substrate, and sequentially forming a lightshielding layer, a first insulative layer, a semiconductor layer, asecond insulative layer;

step 2, forming a first metal layer on the second insulative layer andpatterning the first metal layer to form a gate and a gate line;

the gate line is electrically coupled to the gate;

step 3, forming a third insulative layer on the second insulative layer,which covers the gate and the gate lines, and patterning the secondinsulative layer and the third insulative layer to form a first viahole, a second via hole respectively located at two sides of the gate;

step 4, forming a second metal layer on the third insulative layer andpatterning the second metal layer to form a source, a drain and datalines;

the source and the drain respectively contact the semiconductor layervia the first via hole, the second via hole and form electricalconnections to the semiconductor layer;

the data line is electrically coupled to the source;

the semiconductor layer, the gate, the source and the drain form theTFTs;

the gate lines and the data lines crisscross to one another to define aplurality of pixel areas arranged in array, and each TFT correspondinglydrives one pixel area;

step 5, sequentially forming a fourth insulative layer covering thesource, the drain and the data lines on the third insulative layer, afifth insulative layer covering the fourth insulative layer, andpatterning the fourth insulative layer and the fifth insulative layer toform a third via hole;

step 6, forming and patterning a pixel electrode on the fifth insulativelayer to make each pixel area comprise one pixel electrode;

the pixel electrode contacts the drain via the third via hole to formelectrical connection;

step 7, forming a sixth insulative layer covering the pixel electrode onthe fifth insulative layer;

step 8, forming and patterning a common electrode on the sixthinsulative layer;

the common electrode is located above the pixel electrode and overlapswith the pixel electrode;

the common electrode comprises a first opening, and a second openingsymmetrical to the first opening relative to the gate line; the firstopening overlaps with a first pixel area in the plurality of pixelareas, and the second opening overlaps with a second pixel area adjacentto the first pixel area in the vertical direction;

the first opening comprises an eleventh extension part extending along atilt direction, and a twelfth extension part extending from one end ofthe eleventh extension part and being perpendicular with the eleventhextension part, a thirteenth extension part extending from the other endof the eleventh extension part and being perpendicular with the eleventhextension part; and the extension directions of the twelfth extensionpart and the thirteenth extension part are opposite;

step 9, forming a lower alignment layer on the common electrode.

All the eleventh extension part, the twelfth extension part and thethirteenth extension part overlap with the pixel electrode; the commonelectrode further comprises a third opening symmetrical to the firstopening relative to the data line, a fourth opening symmetrical to thesecond opening relative to the data line; the third opening overlaps athird pixel area adjacent to the first pixel area in the horizontaldirection, and the fourth opening overlaps a fourth pixel area adjacentto the third pixel area in the vertical direction and adjacent to thesecond pixel area in the horizontal direction.

The present invention further provides a display substrate, comprising asubstrate, a plurality of TFTs arranged in array on the substrate, gatelines electrically coupled to the TFTs and arranged along a horizontaldirection, data lines electrically coupled to the TFTs and arrangedalong a vertical direction, pixel electrodes electrically coupled to theTFTs and common electrodes located above the pixel electrodes andoverlap with the pixel electrodes;

the gate lines and the data lines crisscross to one another to define aplurality of pixel areas arranged in array, and each pixel areacomprises one pixel electrode, and each TFT correspondingly drives onepixel area;

the common electrode comprises a first opening, and a second openingsymmetrical to the first opening relative to the gate line; the firstopening overlaps with a first pixel area in the plurality of pixelareas, and the second opening overlaps with a second pixel area adjacentto the first pixel area in the vertical direction;

the first opening comprises an eleventh extension part extending along atilt direction, and a twelfth extension part extending from one end ofthe eleventh extension part and being perpendicular with the eleventhextension part, a thirteenth extension part extending from the other endof the eleventh extension part and being perpendicular with the eleventhextension part; and the extension directions of the twelfth extensionpart and the thirteenth extension part are opposite;

wherein all the eleventh extension part, the twelfth extension part andthe thirteenth extension part overlap with the pixel electrode;

wherein the common electrode further comprises a third openingsymmetrical to the first opening relative to the data line, a fourthopening symmetrical to the second opening relative to the data line; thethird opening overlaps a third pixel area adjacent to the first pixelarea in the horizontal direction, and the fourth opening overlaps afourth pixel area adjacent to the third pixel area in the verticaldirection and adjacent to the second pixel area in the horizontaldirection;

wherein the display substrate further comprises: a light shielding layerlocated on the substrate, a first insulative layer located on the lightshielding layer, a semiconductor layer located on the first insulativelayer, a second insulative layer located on the semiconductor layer, agate located on the second insulative layer, a third insulative layerlocated on the gate, a source and a drain respectively located at twosides of the gate and separated with the second insulative layer and thethird insulative layer;

both the source and the drain contact the semiconductor layer, and formelectrical connections to the semiconductor layer;

the gate lines and the gate are in the same layer; the data lines, thesource and the drain are in the same layer;

the semiconductor layer, the gate, the source and the drain form theTFTs.

The benefits of the present invention are: the present inventionprovides a display substrate and a manufacture method thereof, thecommon electrode being above the pixel electrode and overlapping withthe pixel electrode is located on the same substrate, and the commonelectrode comprises a first opening, a second opening, a third openingand a fourth opening which are symmetrically located to one another, andthe first opening comprises an eleventh extension part extending along atilt direction, a twelfth extension part perpendicular with the eleventhextension part and a thirteenth extension part perpendicular with theeleventh extension part, of which the liquid crystal molecules can bealigned along different directions to form multi-domains in a pluralityof pixel areas, and thus, the color washout can be improved, andmeanwhile, the brightness descend caused by the crystal textures formedat edges of respective domains can be diminished or prevented.

BRIEF DESCRIPTION OF THE DRAWINGS

The technical solution and the beneficial effects of the presentinvention are best understood from the following detailed descriptionwith reference to the accompanying figures and embodiments.

In drawings,

FIG. 1 is a sectional diagram of a display substrate according to thepresent invention;

FIG. 2 is a plane diagram of a display substrate according to thepresent invention;

FIG. 3 is a plane diagram of twisted directions of liquid crystalmolecules aligned on the display substrate according to the presentinvention;

FIG. 4 is a flowchart of a manufacture method of the display substrateaccording to the present invention.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

For better explaining the technical solution and the effect of thepresent invention, the present invention will be further described indetail with the accompanying drawings and the specific embodiments.

The present invention first provides a display substrate, and thedisplay substrate is applied in a PLS liquid crystal display panel.Please refer to FIG. 1 and FIG. 2. The display substrate of the presentinvention comprises a substrate 100, a plurality of TFTs arranged inarray on the substrate 100, gate lines GL electrically coupled to theTFTs and arranged along a horizontal direction, data lines DLelectrically coupled to the TFTs and arranged along a verticaldirection, pixel electrodes 20 electrically coupled to the TFTs andcommon electrodes 10 located above the pixel electrodes 20 and overlapwith the pixel electrodes 20. The gate lines GL and the data lines DLcrisscross to one another to define a plurality of pixel areas arrangedin array, and each pixel area comprises one pixel electrode 20, and eachTFT correspondingly drives one pixel area.

The common electrode 10 comprises a first opening OP1, and a secondopening OP2 symmetrical to the first opening OP1 relative to the gateline GL. The first opening OP1 overlaps with a first pixel area PX1 inthe plurality of pixel areas, and the second opening OP2 overlaps with asecond pixel area PX2 adjacent to the first pixel area PX1 in thevertical direction.

The first opening OP1 comprises an eleventh extension part OP11extending along a tilt direction, a twelfth extension part OP12extending from one end of the eleventh extension part OP11 and beingperpendicular with the eleventh extension part OP11, a thirteenthextension part OP13 extending from the other end of the eleventhextension part OP11 and being perpendicular with the eleventh extensionpart OP11.all the eleventh extension part OP11, the twelfth extensionpart OP12 and the thirteenth extension part OP13 overlap with the pixelelectrode 20, and the extension direction of the eleventh extension partOP11 is different from directions of the gate lines GL and data linesDL, i.e. tilted with both the horizontal direction and the verticaldirection, and the extension directions of the twelfth extension partOP12 and the thirteenth extension part OP13 are opposite.

The second opening OP2 and the first opening OP1 are symmetricalrelative to the gate line GL, and correspondingly, the second openingOP2 comprises a twenty-first extension part OP21, a twenty-secondextension part OP22 extending from one end of the twenty-first extensionpart OP21 and being perpendicular with the twenty-first extension partOP21, a twenty-third extension part OP23 extending from the other end ofthe twenty-first extension part OP21 and being perpendicular with thetwenty-first extension part OP21.

The common electrode 10 further comprises a third opening OP3symmetrical to the first opening OP1 relative to the data line DL and afourth opening OP4 symmetrical to the second opening OP2 relative to thedata line DL. The third opening OP3 overlaps a third pixel area PX3adjacent to the first pixel area PX1 in the horizontal direction, andthe fourth opening OP4 overlaps a fourth pixel area PX4 adjacent to thethird pixel area PX3 in the vertical direction and adjacent to thesecond pixel area PX2 in the horizontal direction. The third opening OP3has the same appearance as the second opening OP2, and correspondinglycomprises a thirty-first extension part OP31, a thirty-second extensionpart OP32 extending from one end of the thirty-first extension part OP31and being perpendicular with the thirty-first extension part OP31, athirty-third extension part OP33 extending from the other end of thethirty-first extension part OP31 and being perpendicular with thethirty-first extension part OP31; the fourth opening OP4 has the sameappearance as the first opening OP1, and correspondingly comprises aforty-first extension part OP41, a forty-second extension part OP42extending from one end of the forty-first extension part OP41 and beingperpendicular with the forty-first extension part OP41, a forty-thirdextension part OP43 extending from the other end of the forty-firstextension part OP41 and being perpendicular with the forty-firstextension part OP41.

The common electrode comprises a repeat unit, and the repeat unitcorresponds to four pixel areas in two adjacent rows and two adjacentcolumns which crisscross with the two adjacent rows.

The display substrate further comprises: a light shielding layer 40located on the substrate 100, a first insulative layer 31 located on thelight shielding layer 40, a semiconductor layer 60 located on the firstinsulative layer 31, a second insulative layer 32 located on thesemiconductor layer 60, a gate 70 located on the second insulative layer32, a third insulative layer 33 located on the gate 70, a source 80 anda drain 90 respectively located at two sides of the gate 70 andseparated with the second insulative layer 32 and the third insulativelayer 33, a fourth insulative layer 34 located on the source 80, thedrain 90, a fifth insulative layer 35 located between the fourthinsulative layer 34 and the pixel electrode 20, a sixth insulative layer36 located between the pixel electrode 20 and the common electrode 10and a lower alignment layer 50 located on the common electrode 10.

The source 80 and the drain 90 respectively contact the semiconductorlayer 60 via a first via hole 801 and a second via hole 901 penetratingthe second insulative layer 32 and the third insulative layer 33 to formelectrical connections to the semiconductor layer 60.

The gate lines GL and the gate 70 are in the same layer, and the gatelines GL are electrically coupled to the gates 70 of the TFTs; the datalines DL, the source 80 and the drain 90 are in the same layer, and thedata lines DL are electrically coupled to the sources 80 of the TFTs.

The semiconductor layer 60, the gate 70, the source 80 and the drain 90form the TFTs.

The pixel electrode 20 contacts the drain 90 via a third via hole 201penetrating the fourth insulative layer 34 and the fifth insulativelayer 35 to form electrical connection.

AS shown in FIG. 3, as the pixel electrodes 10 are applied withvoltages, the liquid crystal molecules LC are twisted according to theelectric field formed between the pixel electrodes 10 and the commonelectrodes 20. Because the common electrode 10 comprises a first openingOP1, a second opening OP2, a third opening OP3 and a fourth opening OP4,and the first opening OP1 comprises an eleventh extension part OP11extending along a tilt direction, a twelfth extension part OP12perpendicular with the eleventh extension part OP11 and a thirteenthextension part OP13 perpendicular with the eleventh extension part OP11,the liquid crystal molecules LC corresponding to the first pixel areaPX1, the second pixel area PX2, the third pixel area PX3, the fourthpixel area PX4 can be aligned along different directions to formmulti-domains in a plurality of pixel areas, and thus, the color washoutcan be improved, and meanwhile, the brightness descend caused by thecrystal textures formed at edges of respective domains can be diminishedor prevented.

Please refer to FIG. 4 in combination with FIG. 1, FIG. 2, and thepresent invention further provides a manufacture method of a displaysubstrate, comprising steps of:

step 1, providing a substrate 100, and sequentially forming a lightshielding layer 40, a first insulative layer 31, a semiconductor layer60, a second insulative layer 32.

step 2, forming a first metal layer on the second insulative layer 32and patterning the first metal layer to form a gate 70 and a gate lineGL;

the gate line GL is electrically coupled to the gate 70.

step 3, forming a third insulative layer 33 on the second insulativelayer 32, which covers the gate 70 and the gate lines GL, and patterningthe second insulative layer 32 and the third insulative layer 33 to forma first via hole 801, a second via hole 901 respectively located at twosides of the gate 70.

step 4, forming a second metal layer on the third insulative layer 33and patterning the second metal layer to form a source 80, a drain 90and data lines DL.

The source 80 and the drain 90 respectively contact the semiconductorlayer 60 via the first via hole 801, the second via hole 901 and formelectrical connections to the semiconductor layer 60.

The data line DL is electrically coupled to the source 80.

The semiconductor layer 60, the gate 70, the source 80 and the drain 90form the TFTs.

The gate lines GL and the data lines DL crisscross to one another todefine a plurality of pixel areas arranged in array, and each TFTcorrespondingly drives one pixel area.

step 5, sequentially forming a fourth insulative layer 34 covering thesource 80, the drain 90 and the data lines DL on the third insulativelayer 33, a fifth insulative layer 35 covering the fourth insulativelayer 34, and patterning the fourth insulative layer 34 and the fifthinsulative layer 35 to form a third via hole 201.

step 6, forming and patterning a pixel electrode on the fifth insulativelayer 35 to make each pixel area comprise one pixel electrode 20.

The pixel electrode 20 contacts the drain 90 via the third via hole 201to form electrical connection.

step 7, forming a sixth insulative layer 36 covering the pixel electrode20 on the fifth insulative layer 35.

step 8, forming and patterning a common electrode 10 on the sixthinsulative layer 36.

The common electrode 10 is located above the pixel electrode 20 andoverlapping with the pixel electrode 20.

The common electrode 10 comprises the first opening OP1, and a secondopening OP2 symmetrical to the first opening OP1 relative to the gateline GL; the first opening OP1 overlaps with a first pixel area PX1 inthe plurality of pixel areas, and the second opening OP2 overlaps with asecond pixel area PX2 adjacent to the first pixel area PX1 in thevertical direction.

The first opening OP1 comprises an eleventh extension part OP11extending along a tilt direction, a twelfth extension part OP12extending from one end of the eleventh extension part OP11 and beingperpendicular with the eleventh extension part OP11, a thirteenthextension part OP13 extending from the other end of the eleventhextension part OP11 and being perpendicular with the eleventh extensionpart OP11; and the extension directions of the twelfth extension partOP12 and the thirteenth extension part OP13 are opposite.

Furthermore, all the eleventh extension part OP11, the twelfth extensionpart OP12 and the thirteenth extension part OP13 overlap with the pixelelectrode 20.

The common electrode 10 further comprises a third opening OP3symmetrical to the first opening OP1 relative to the data line DL and afourth opening OP4 symmetrical to the second opening OP2 relative to thedata line DL. The third opening OP3 overlaps a third pixel area PX3adjacent to the first pixel area PX1 in the horizontal direction, andthe fourth opening OP4 overlaps a fourth pixel area PX4 adjacent to thethird pixel area PX3 in the vertical direction and adjacent to thesecond pixel area PX2 in the horizontal direction.

step 9, forming a lower alignment layer 50 on the common electrode 10.

With the display substrate manufactured by the method, the liquidcrystal molecules can be aligned along different directions to formmulti-domains in a plurality of pixel areas, and thus, the color washoutcan be improved, and meanwhile, the brightness descend caused by thecrystal textures formed at edges of respective domains can be diminishedor prevented.

In conclusion, a display substrate and a manufacture method thereof ofthe present invention, locate the common electrode above the pixelelectrode and overlapping with the pixel electrode on the samesubstrate; the common electrode comprises a first opening, a secondopening, a third opening and a fourth opening which are symmetricallylocated to one another; the first opening comprises an eleventhextension part extending along a tilt direction, a twelfth extensionpart perpendicular with the eleventh extension part and a thirteenthextension part perpendicular with the eleventh extension part, of whichthe liquid crystal molecules can be aligned along different directionsto form multi-domains in a plurality of pixel areas, and thus, the colorwashout can be improved, and meanwhile, the brightness descend caused bythe crystal textures formed at edges of respective domains can bediminished or prevented.

Above are only specific embodiments of the present invention, the scopeof the present invention is not limited to this, and to any persons whoare skilled in the art, change or replacement which is easily derivedshould be covered by the protected scope of the invention. Thus, theprotected scope of the invention should go by the subject claims.

What is claimed is:
 1. A display substrate, comprising a substrate, aplurality of TFTs arranged in array on the substrate, gate lineselectrically coupled to the TFTs and arranged along a horizontaldirection, data lines electrically coupled to the TFTs and arrangedalong a vertical direction, pixel electrodes electrically coupled to theTFTs and common electrodes located above the pixel electrodes andoverlap with the pixel electrodes; the gate lines and the data linescrisscross to one another to define a plurality of pixel areas arrangedin array, and each pixel area comprises one pixel electrode, and eachTFT correspondingly drives one pixel area; the common electrodecomprises a first opening, and a second opening symmetrical to the firstopening relative to the gate line; the first opening overlaps with afirst pixel area in the plurality of pixel areas, and the second openingoverlaps with a second pixel area adjacent to the first pixel area inthe vertical direction; the first opening comprises an eleventhextension part extending along a tilt direction, and a twelfth extensionpart extending from one end of the eleventh extension part and beingperpendicular with the eleventh extension part, a thirteenth extensionpart extending from the other end of the eleventh extension part andbeing perpendicular with the eleventh extension part; and the extensiondirections of the twelfth extension part and the thirteenth extensionpart are opposite.
 2. The display substrate according to claim 1,wherein all the eleventh extension part, the twelfth extension part andthe thirteenth extension part overlap with the pixel electrode.
 3. Thedisplay substrate according to claim 1, wherein the common electrodefurther comprises a third opening symmetrical to the first openingrelative to the data line, a fourth opening symmetrical to the secondopening relative to the data line; the third opening overlaps a thirdpixel area adjacent to the first pixel area in the horizontal direction,and the fourth opening overlaps a fourth pixel area adjacent to thethird pixel area in the vertical direction and adjacent to the secondpixel area in the horizontal direction.
 4. The display substrateaccording to claim 1, further comprising: a light shielding layerlocated on the substrate, a first insulative layer located on the lightshielding layer, a semiconductor layer located on the first insulativelayer, a second insulative layer located on the semiconductor layer, agate located on the second insulative layer, a third insulative layerlocated on the gate, a source and a drain respectively located at twosides of the gate and separated with the second insulative layer and thethird insulative layer; both the source and the drain contact thesemiconductor layer, and form electrical connections to thesemiconductor layer; the gate lines and the gate are in the same layer;the data lines, the source and the drain are in the same layer; thesemiconductor layer, the gate, the source and the drain form the TFTs.5. The display substrate according to claim 4, wherein the source andthe drain respectively contact the semiconductor layer via a first viahole and a second via hole penetrating the second insulative layer andthe third insulative layer.
 6. The display substrate according to claim5, wherein the gate lines are electrically coupled to the gates of theTFTs, and the data lines are electrically coupled to the sources of theTFTs.
 7. The display substrate according to claim 6, further comprisinga fourth insulative layer located on the source, the drain, a fifthinsulative layer located between the fourth insulative layer and thepixel electrode, a sixth insulative layer located between the pixelelectrode and the common electrode and a lower alignment layer locatedon the common electrode; the pixel electrode contacts the drain to formelectrical connection.
 8. The display substrate according to claim 7,wherein the pixel electrode contacts the drain via a third via holepenetrating the fourth insulative layer and the fifth insulative layer.9. A manufacture method of a display substrate, comprising steps of:step 1, providing a substrate, and sequentially forming a lightshielding layer, a first insulative layer, a semiconductor layer, asecond insulative layer; step 2, forming a first metal layer on thesecond insulative layer and patterning the first metal layer to form agate and a gate line; the gate line is electrically coupled to the gate;step 3, forming a third insulative layer on the second insulative layer,which covers the gate and the gate lines, and patterning the secondinsulative layer and the third insulative layer to form a first viahole, a second via hole respectively located at two sides of the gate;step 4, forming a second metal layer on the third insulative layer andpatterning the second metal layer to form a source, a drain and datalines; the source and the drain respectively contact the semiconductorlayer via the first via hole, the second via hole and form electricalconnections to the semiconductor layer; the data line is electricallycoupled to the source; the semiconductor layer, the gate, the source andthe drain form the TFTs; the gate lines and the data lines crisscross toone another to define a plurality of pixel areas arranged in array, andeach TFT correspondingly drives one pixel area; step 5, sequentiallyforming a fourth insulative layer covering the source, the drain and thedata lines on the third insulative layer, a fifth insulative layercovering the fourth insulative layer, and patterning the fourthinsulative layer and the fifth insulative layer to form a third viahole; step 6, forming and patterning a pixel electrode on the fifthinsulative layer to make each pixel area comprise one pixel electrode;the pixel electrode contacts the drain via the third via hole to formelectrical connection; step 7, forming a sixth insulative layer coveringthe pixel electrode on the fifth insulative layer; step 8, forming andpatterning a common electrode on the sixth insulative layer; the commonelectrode is located above the pixel electrode and overlaps with thepixel electrode; the common electrode comprises a first opening, and asecond opening symmetrical to the first opening relative to the gateline; the first opening overlaps with a first pixel area in theplurality of pixel areas, and the second opening overlaps with a secondpixel area adjacent to the first pixel area in the vertical direction;the first opening comprises an eleventh extension part extending along atilt direction, and a twelfth extension part extending from one end ofthe eleventh extension part and being perpendicular with the eleventhextension part, a thirteenth extension part extending from the other endof the eleventh extension part and being perpendicular with the eleventhextension part; and the extension directions of the twelfth extensionpart and the thirteenth extension part are opposite; step 9, forming alower alignment layer on the common electrode.
 10. The manufacturemethod of the display substrate according to claim 9, wherein all theeleventh extension part, the twelfth extension part and the thirteenthextension part overlap with the pixel electrode; the common electrodefurther comprises a third opening symmetrical to the first openingrelative to the data line, a fourth opening symmetrical to the secondopening relative to the data line; the third opening overlaps a thirdpixel area adjacent to the first pixel area in the horizontal direction,and the fourth opening overlaps a fourth pixel area adjacent to thethird pixel area in the vertical direction and adjacent to the secondpixel area in the horizontal direction.
 11. A display substrate,comprising a substrate, a plurality of TFTs arranged in array on thesubstrate, gate lines electrically coupled to the TFTs and arrangedalong a horizontal direction, data lines electrically coupled to theTFTs and arranged along a vertical direction, pixel electrodeselectrically coupled to the TFTs and common electrodes located above thepixel electrodes and overlap with the pixel electrodes; the gate linesand the data lines crisscross to one another to define a plurality ofpixel areas arranged in array, and each pixel area comprises one pixelelectrode, and each TFT correspondingly drives one pixel area; thecommon electrode comprises a first opening, and a second openingsymmetrical to the first opening relative to the gate line; the firstopening overlaps with a first pixel area in the plurality of pixelareas, and the second opening overlaps with a second pixel area adjacentto the first pixel area in the vertical direction; the first openingcomprises an eleventh extension part extending along a tilt direction,and a twelfth extension part extending from one end of the eleventhextension part and being perpendicular with the eleventh extension part,a thirteenth extension part extending from the other end of the eleventhextension part and being perpendicular with the eleventh extension part;and the extension directions of the twelfth extension part and thethirteenth extension part are opposite; wherein all the eleventhextension part, the twelfth extension part and the thirteenth extensionpart overlap with the pixel electrode; wherein the common electrodefurther comprises a third opening symmetrical to the first openingrelative to the data line, a fourth opening symmetrical to the secondopening relative to the data line; the third opening overlaps a thirdpixel area adjacent to the first pixel area in the horizontal direction,and the fourth opening overlaps a fourth pixel area adjacent to thethird pixel area in the vertical direction and adjacent to the secondpixel area in the horizontal direction; wherein the display substratefurther comprises: a light shielding layer located on the substrate, afirst insulative layer located on the light shielding layer, asemiconductor layer located on the first insulative layer, a secondinsulative layer located on the semiconductor layer, a gate located onthe second insulative layer, a third insulative layer located on thegate, a source and a drain respectively located at two sides of the gateand separated with the second insulative layer and the third insulativelayer; both the source and the drain contact the semiconductor layer,and form electrical connections to the semiconductor layer; the gatelines and the gate are in the same layer; the data lines, the source andthe drain are in the same layer; the semiconductor layer, the gate, thesource and the drain form the TFTs.
 12. The display substrate accordingto claim 11, wherein the source and the drain respectively contact thesemiconductor layer via a first via hole and a second via holepenetrating the second insulative layer and the third insulative layer.13. The display substrate according to claim 11, wherein the gate linesare electrically coupled to the gates of the TFTs, and the data linesare electrically coupled to the sources of the TFTs.
 14. The displaysubstrate according to claim 11, further comprising a fourth insulativelayer located on the source, the drain, a fifth insulative layer locatedbetween the fourth insulative layer and the pixel electrode, a sixthinsulative layer located between the pixel electrode and the commonelectrode and a lower alignment layer located on the common electrode;the pixel electrode contacts the drain to form electrical connection.15. The display substrate according to claim 14, wherein the pixelelectrode contacts the drain via a third via hole penetrating the fourthinsulative layer and the fifth insulative layer.